Traction and lawn-rolling roller.



PATENTED SEPT. 3'; 1907.

W. H, GOLDWELL. TRACTION AND LAWNPROLLING ROLLER! APPLICATION FILED MAY 15.1907.

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TRACTION AND- LAWN ROLLING ROLLER.

APPLIOA TION FILED MAY 16. 19 07.

' UNITED TATES BATENT OFFICE. l

.WILLIAM H. OOLDWELL, or rinwnunen, NEW YoRK.

'rnnc'rron AND LAWNLBOLLING ROLLER.

Specification of Letters Patent.

' Patented Sept. 3, 1907.

it umion filed May s, 190 Serial No: 574,009.

To all whom it may concern:

Be it known that 1, WILLIAM H. GOLDWELL, a citizen of the United States, residing at Newburgh, in the county of Orange and State of New York, have invented certain new and useful Improvementsin Traction and Lawn- Rolling Rollers; and I do hereby declare-the following to be a full, clear, and exact description of the i contemplated embodying my invention and said invention is fully disclosed in the following description and claims. I i Y v In the use of motor operated lawn mowers and rollers, considerable difliculty experienced at times in securing the necessary traction of the driving rollers upon'the lawn especially where the grassis wet, or .when it is rollers on golf courses, and estates having large lawns, makes it increasingly important to secure a combined traction'and lawn rolling roller which will'accomplish the two-iold results desired, to wit, prevent the slip of the roller, longitudinally-and also transversely ofthe machine, and yet avoid any perceptible effect upon the lawn. After considerable experimentation on this sub ject, I have produced a combined traction and lawn rolling roller which is suitable for use in motor mowers,

rollers and the like, inthe' use of which the desired re sults are fully accomplished and without in any way marring'the lawn, or maln'ng any effect thereon which is an enlarged view-of a portion of the roller, partly in section. 5 i

In the drawings 1i represents the motor frame of a motor lawn mower and roller, supported upon the combined traction and lawn rolling roller B, and the lawn rolling and steering roller B,.and provided with a suit-f able motor C, in this instance an explosion engine,

' which is connected by suitable mechanism (not shown) with the traction and lawn rolling roller B. D represents the cutter frame, carrying the cutting mechanism, and connected by arms E with the motor 'frame so as to be pushed by and ahead of the latter.

The combined traction and lawn rolling roller B is shown in detailin Fig. 2, and it has its outer face which is for the most part. smooth and cylindrical, provided with a plurality oivery small projections b, which are circular and rounded over, forming segments oha sphere.

These projections arelocated at suitable intervals over the entire cylindrical surfaceof the roller and are preferably castor otherwise iormed integrally therewith. The sire and altitude of the projections is such that when the roller B passes over a lawn, they will leave no perceptible impression, ,while at the same time they prevent the slipping of the roller under the traction of the motor, and also prevent the roller from slipping endwise or transverselyv ofthe machine. In practice I find that by making the height of the projections b about one half of their diameter, and separating them a distance equal to two or more times their diameter the best results are obtained, and 1 preferably make the projections about one .quarter'of an inch in diameter, one eighth of an inch in height and separate their centers about half an inch to an inch. It will be observed that as the pro.- jections are so nearly fiat, and are so widely separated it is impossible for'the'spaces between them to fill up with dirt or as their spherical surfaces causes them 'to clear themselves from foreign matter, and thus the roller will always have sufficient traction and the separation of theseprojections in all directions causes the roller to be held against slipping sidewise as well as.

straightaway. It is also found that in using this roller on comparatively barren parts of the lawn or field,

'where it 'is desired to. sow grass seed, the projections I) leave minute pocketsin bare earth, well calculated to receive the seed,- and also'to accumulate water after a -rain', so that its use is desirable and advantageous in.

i soon as the roller has passed over it.

WhatI claim and desire to secure by Letters Patent is:

1'. A traction and lawn rollingroller, having a plain cylindrical surface, provided 'with projections, separated from each other in all directions, and of such size as to p'i'ovideiraction without max-ring a lawn, substantially as described.

2. Av traction and lawn rolling rollerhaving a plain cylindrical surface,"provided with projections separated 1 from each other in all directions, and of such size as to providc traction without marring alawn, said projections being in the form of a segment of a sphere, and having their altitude less than their diameter, substantially as described.

In'testimony whereof I atfix' my signature, in the'pres- "15 

